{'created': '2017-12-14T16:46:06.044Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': 'In macOS and OS X, when applications or programs are '
                'downloaded from the internet, there is a special attribute '
                'set on the file called <code>com.apple.quarantine</code>. '
                "This attribute is read by Apple's Gatekeeper defense program "
                'at execution time and provides a prompt to the user to allow '
                'or deny execution. \n'
                '\n'
                'Apps loaded onto the system from USB flash drive, optical '
                'disk, external hard drive, or even from a drive shared over '
                'the local network won’t set this flag. Additionally, other '
                'utilities or events like drive-by downloads don’t necessarily '
                'set it either. This completely bypasses the built-in '
                'Gatekeeper check. (Citation: Methods of Mac Malware '
                'Persistence) The presence of the quarantine flag can be '
                'checked by the xattr command <code>xattr '
                '/path/to/MyApp.app</code> for '
                '<code>com.apple.quarantine</code>. Similarly, given sudo '
                'access or elevated permission, this attribute can be removed '
                'with xattr as well, <code>sudo xattr -r -d '
                'com.apple.quarantine /path/to/MyApp.app</code>. (Citation: '
                'Clearing quarantine attribute) (Citation: OceanLotus for OS '
                'X)\n'
                ' \n'
                'In typical operation, a file will be downloaded from the '
                'internet and given a quarantine flag before being saved to '
                'disk. When the user tries to open the file or application, '
                'macOS’s gatekeeper will step in and check for the presence of '
                'this flag. If it exists, then macOS will then prompt the user '
                'to confirmation that they want to run the program and will '
                'even provide the URL where the application came from. '
                'However, this is all based on the file being downloaded from '
                'a quarantine-savvy application. (Citation: Bypassing '
                'Gatekeeper)',
 'external_references': [{'external_id': 'T1144',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1144'},
                         {'description': 'Patrick Wardle. (2014, September). '
                                         'Methods of Malware Persistence on '
                                         'Mac OS X. Retrieved July 5, 2017.',
                          'source_name': 'Methods of Mac Malware Persistence',
                          'url': 'https://www.virusbulletin.com/uploads/pdf/conference/vb2014/VB2014-Wardle.pdf'},
                         {'description': 'Rich Trouton. (2012, November 20). '
                                         'Clearing the quarantine extended '
                                         'attribute from downloaded '
                                         'applications. Retrieved July 5, '
                                         '2017.',
                          'source_name': 'Clearing quarantine attribute',
                          'url': 'https://derflounder.wordpress.com/2012/11/20/clearing-the-quarantine-extended-attribute-from-downloaded-applications/'},
                         {'description': 'Eddie Lee. (2016, February 17). '
                                         'OceanLotus for OS X - an Application '
                                         'Bundle Pretending to be an Adobe '
                                         'Flash Update. Retrieved July 5, '
                                         '2017.',
                          'source_name': 'OceanLotus for OS X',
                          'url': 'https://www.alienvault.com/blogs/labs-research/oceanlotus-for-os-x-an-application-bundle-pretending-to-be-an-adobe-flash-update'},
                         {'description': 'Thomas Reed. (2016, March 31). '
                                         "Bypassing Apple's Gatekeeper. "
                                         'Retrieved July 5, 2017.',
                          'source_name': 'Bypassing Gatekeeper',
                          'url': 'https://blog.malwarebytes.com/cybercrime/2015/10/bypassing-apples-gatekeeper/'}],
 'id': 'attack-pattern--6fb6408c-0db3-41d9-a3a1-a32e5f16454e',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'defense-evasion'}],
 'modified': '2025-10-24T17:48:56.162Z',
 'name': 'Gatekeeper Bypass',
 'object_marking_refs': ['marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168'],
 'revoked': True,
 'spec_version': '2.1',
 'type': 'attack-pattern',
 'x_mitre_attack_spec_version': '3.2.0',
 'x_mitre_deprecated': False,
 'x_mitre_detection': '',
 'x_mitre_domains': ['enterprise-attack'],
 'x_mitre_is_subtechnique': False,
 'x_mitre_modified_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'x_mitre_platforms': ['macOS'],
 'x_mitre_version': '1.2'}